NS7520B-1-C55 Digi International, NS7520B-1-C55 Datasheet - Page 37
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NS7520B-1-C55
Manufacturer Part Number
NS7520B-1-C55
Description
IC ARM MICROPROCESSOR 177BGA
Manufacturer
Digi International
Series
NET+ARM®r
Specifications of NS7520B-1-C55
Applications
Network Processor
Core Processor
ARM7
Program Memory Type
External Program Memory
Controller Series
-
Ram Size
External
Interface
EBI/EMI, Ethernet, DMA, SPI, UART
Number Of I /o
16
Voltage - Supply
1.4 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
177-LFBGA
Lead Free Status / RoHS Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
NS7520B-1-C55
Manufacturer:
IR
Quantity:
4 954
Company:
Part Number:
NS7520B-1-C55
Manufacturer:
Digi International
Quantity:
10 000
Part Number:
NS7520B-1-C55
Manufacturer:
NETARM
Quantity:
20 000
SRAM burst read (2111)
CS* controlled read (wait = 0, BCYC = 00)
Notes:
1
2
3
TEA* (Note-3)
TA* (Note-3)
read D[31:0]
Sync OE*
BE[3:0]*
CS0OE*
CS[4:0]*
If the next transfer is DMA, null periods between memory transfers can occur. Thirteen clock
pulses are required for DMA context switching.
Port size determines which byte enable signals are active:
–
–
–
The TA* and TEA*/LAST signals are for reference only.
A[27:0]
BCLK
RW*
8-bit port = BE3*
16-bit port = BE[3:0]
32-bit port = BE[3:0]
Note-2
6
36
12
T1
28
30
27
18
T2
10
11
T2
T2
31
w w w . d i g i . c o m
T2
30
31
36
27
18
Note-1
28
T1
S R A M t i m i n g
3 3